The ancient house had over a hundred manuals on its sandalwood bookshelf, with three manuals and two techniques at the topmost layer. There was one manual and two techniques there.,Lin Feng's heart stirred. This set of martial arts techniques didn't have any requirements for strength, anyone could cultivate it regardless of their cultivation level. The prerequisite was that they could understand it.,Lin Feng subtly shook his head. Old Northern didn't mention this huge door to him, and it was clear that Old Northern as well as the predecessors from Cloud Sea Sect never opened this door before.。